Publikationen

The formation of ZnO nanoparticles from zinc gluconate

Autor(en)
Željka Petrović, Mira Ristić, Svetozar Musić, Bogdan Sepiol, Herwig Peterlik
Abstrakt

A simple and reproducible procedure for the preparation of ZnO nanoparticles is presented. It is based on the alkali precipitation from zinc gluconate solution, followed by aging of the precipitation systems at room temperature for the period between 1 and 60 days and calcination of isolated precipitates at 300°C. The crystallites of all ZnO samples were in nanosize range as determined with the Scherrer method. There were no significant texture effects what indicates the lack of preferential ZnO crystallites orientation. XRD showed amorphous nature of zinc (hydrous)oxide precursors. SAXS analysis of zinc (hydrous)oxide precursor showed the presence of structural units with a mean distance of 1.5 nm. This is attributed to the typical distance of the adsorbed gluconate groups. Adsorption of gluconate groups on zinc (hydrous)oxide precursor was confirmed with FT-IR spectroscopy. FE-SEM images showed gradual aggregation of ZnO nanoparticles with prolonged ageing time of amorphous zinc (hydrous)oxide suspension. Optical spectra were recorded and the band gap gradually decreased from 3.25 eV to 3.05 eV for ZnO samples produced from initially precipitated suspensions aged between 1 and 60 days.

Organisation(en)
Dynamik Kondensierter Systeme, Fakultätszentrum für Nanostrukturforschung
Externe Organisation(en)
Institute Ruder Boskovic (RBI)
Journal
Ceramics International
Band
41
Seiten
4975-4981
Anzahl der Seiten
7
ISSN
0272-8842
DOI
https://doi.org/10.1016/j.ceramint.2014.12.061
Publikationsdatum
12-2014
Peer-reviewed
Ja
ÖFOS 2012
Festkörperphysik, Katalyse, Anorganische Chemie
Schlagwörter
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/the-formation-of-zno-nanoparticles-from-zinc-gluconate(de4b7cb9-9435-4056-8c6a-3a344c78b150).html